Composite lath and heat-insulating material.



G. H. ELLIS.

COMPOSITE LATE ANDBBAT INSULATING- MATERIAL.

l, AHLI'OATIOH :FILED MAY'Q, 1914.

Patented Jan. 26 1915.

, f. I /I centeno GEORGE H." ELLIS. F SIT'. PAUZE, MNNESOTA.

GOMPGSITE LATE AND HEAT-INSULATING MATERIAL.

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Specification of Letters Patent.

lllatentedtlflan. 2e?, itt-M5.

.application`r tiled May 9, 191A. Serial No. 837,555.

To all w/om t may, concern.'

such for example,

Be it known that I', GEORGE H. ELLIS, a Citizeny of the United, States,residing at St. Paul, inthe county of Ramsey and State of 4innesota,have' invented certain new and useful AImprovements in Composite Lathand Heat-'Insulating Material; and I do hereby declare the following tobe al full, clear, and exact description of the invention,.such as' willenable others sln'lled in the art to which it appertains to make and usethe same. l

My present invention has for its object to provide an improved compositelath and heat insulating building material, and to such ends, generallystated, the invention consists of the novel devices and combinations ofdevices hereinafter described and y defined in the claims.

The body .of this improved material is preferably a felted sheet ofinsulating liber, as that disclosed and claimed in United States PatentNo. 908,681, granted to James E. Lappen, of

date, January 5th, 1909, and entitled Flax felt, but such insulatingmaterial may take various other forms, so far as the broad idea of thisinvention is concerned. For example, this heat insulating sheet might becomposed of Vshredded straw, corn stalks, hemp, or even excelsior7shavings. However, felted flax or hemp make the best material for theabove noted purpose.

On the outer face of the insulating sheet or body is placed a sheet ofwater proof material, such as a cheap grade of rooiing or some of thebetter grades of building paper. A heavy water proof paper known underthe trade name of Neponsit paper affords a very good material for thispurpose. The lath are preferably provided with beveled edges and theyare suitably secured on the Water proof facing sheet and are secured tothe main body sheet of insulating material, preferably by staples orsmall nails. The beveled edges of the lath afford dove-tailed channelsbetween the lath which is well adapted to hold the plaster in position.

The invention is illustrated in the single view of drawing, which isperspective view, partly in section and with some parts broken away.

The felted body of insulating material is indicated by the numeral 1,the water proof ing boards but also facing by the numeral 2, and thelath by the numeral 3.

The numeral. 4; indicates staples driven through the insulating sheet 1andwater proof sheet Q and into the lath.

The numeral 5 indicates the body of plaster vwhich, is applied to thelath and against the waterproof sheet.

This improved building material is adapted to be used both inside andoutside of the walls of buildings and it is well adapted to take theplace not only of sheathof the ordinaryexpanding material or wirelath.In fact, the wooden lath willlast longer than the metal lath and theinsulating body is a vmuch more efficient heat Vinsulator than sheathingboards, even when the latter are combined With many layers of ordinarybuilding paper. In fact, experience has shown that this material is welladapted for use both as a heat insulator and lath, when applied directlyto the studding of buildings for the application of the external coat ofplaster, cement or stucco. lt is well known that the large number-of aircellsin felted iiber sheets give the same a very high heat insulatingquality. The water proof facing sheet is, of course, very desirablebecause it positively keeps moisture' out of contact with the insulatingmaterial and prevents rotting or soul-ing thereof, and furthermore, thisfacing sheet is also a good heat insula tor and efl'ectually resists thepassage of air through the material.

The felted fibrous insulating body sheet,

rigidity to maintain I ordinary handling, is,

while it has suiiicient its own form under nevertheless, quite flexibleand may be easily bent in a curved or bther form in a directiontransversely of the lath. In the direction of the lath, thecompositematerial is stiif so that it is wellada'pted to span the space betweenstudding and to be nailed directly thereto.

What I claim is:

1. A composite lath and heat insulating material comprising a feltedinsulated body sheet, a water proof facing applied thereto, lath appliedto said water proof facing, and metallic fastening devices driventhrough the said three elements to securely fasten said lath to the saidfelted bodysheet and to the said facing.

2. A composite lath and heat insulating lll@ material cewmmswg' a sheet,a me e: mooi? eee-'u a; and latn apphe 'J2e 5h16. wete? the said thin-ugether by 1 said nsun* and into sam 3. A compimaterial com "frz3` l@sheet, a We'eg" D eef sl' and' 151th appie fw :sa

Le sai@ three eemenbs 'be .felelg the edges of ihe Sa led to norddove-tae @manuels bem'een he mth.

"in esvsimony wheeoi in presence of two Wnesff LLL; f

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